I need to activate my router at my new location but my phone isn't compatible with the app.

Thank you for choosing Xfinity and for joining the Xfinity Forums community, user_70a805! Technical issues like this can be frustrating, but you've absolutely come to the right place for help. You can activate your modem through a web browser. To get started, you can either:

Connect temporarily using the default Network Name (SSID) and Password printed on the bottom of your Gateway (it might look like Home-XXXX or XFSETUP-XXXX), or
use an Ethernet cable. Once you're connected, you should automatically see a welcome screen to begin setup. If that doesn’t appear, simply open a browser and go to this link. From there, just follow the on-screen steps to verify your Xfinity account and complete the activation. Please let me know if this information helps or if you run into any issues along the way. By the way, we have some amazing Xfinity Mobile deals going on right now if you're in the market for a new mobile device. For example, customer can get an Unlimited 5G mobile line included for a year with your 300 Mbps Xfinity internet & faster. Cut your bill in half compared to other carriers!